#include <stdio.h>

int main()
{
#if 0
    int xx, yy;
    xx = 1+1, 2+1, 3+2, 4+3, 5*5, 6*7;
    printf("xx = %d\n", xx);
    yy = (1+1, 2+1, 3+2, 4+3, 5*5, 6*7);
    printf("yy = %d\n", yy);
#endif

    int i = 0;
    int j = 9;
    for(i<=j;i++;j--)
    {
        printf("%d + %d = %d\n",i,j,i+j);
    }
    return 0;
}
